<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>这个例子演示了如何显示一个元素的块元素</title>
    <style>
        span
        {
            display: block;
        }
    </style>
</head>
<body>
<span>display属性值为“block”的结果</span> <span>这两个元素之间的换行符。</span>
</body>
</html>